Hey, I have just started a new job in the last 3 weeks. We have been TTC for 2 and a half years and I started Clomid about 2 weeks before i started my new job. The way i see it is women fall pregnant all the time and a lot of them are not even TTC. I dont see the point in putting things like this off because u never know how long it will take to get ur BFP. With maternity pay as long as you are with the company for 6 months then you qualify for it. I looked into this before starting my new job aswell to make sure i would get maternity pay. Here is a website that will give u more info -
http://www.yourlegalrights.co.uk/employment/maternity-rights
Gook luck what ever you choose to do!